Iron Ore

Overview
Iron Ore is the 2nd most common ore in Survival 303, being found at a whopping total of 10 islands; this is over half of the islands in the game.

Iron Ore can be placed near a source of fire (i.e. burning Small Leaves) in order to produce Refined Iron. It is recommended to mine as much iron as you can when you get the chance, as it is used throughout the game, even during the end-game.

You can also get Refined Iron by placing a heat source on top of the Iron Ore vein, as it will turn the ore into its refined counterpart. However, you still need to mine it.